Разложите на множители: 15a²b³c - 10a³b²c² + 5ab²c³
(x-6)(4a+b) - (2a - 4b) (x-6)
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15a²b³c - 10a³b²c² + 5ab²c³ =

= 5ab²c(3аb - 2a²c + c²)

(x-6)(4a+b) - (2a - 4b) (x-6) =

= 4ax + bx - 24a - 6b - (2ax - 12a - 4bx + 24b) =

= 4ax + bx - 24a - 6b - 2ax + 12a + 4bx - 24b =

= 2ax + 5bx - 12a - 30b = 2x(a + 2,5b) - 12(a + 2,5b) =

= (2x - 12)(a + 2,5b)